Woodworking-machine



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' Patented Nov 10, 1896',

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D. BULL-00K. WOODWORKING MACHINE.

No; 571,186. l Patented Nov'. l0, 1,896. v

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UNITED STATES `'PATENT OFFICE.

DANIEL BULLOOK, OF FORT ATKINSON, WISCONSIN.

WOODWORKING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 571,186, dated November10, 1896. Application het June 12,1896. seria No. 595.336. (No model.)

chines, of which the following is a speciiication.

My invention relates to woodworking-may chines, and more particularly tothat cla-ss designed especially to form or shape the ends ofcarriage-bows and the like.

The object of the present construction is to produce a simple andstrongmachine, one that is efficient in its operation and also easy ofmanipulation.

In the accompanying drawings, Figure 1 is a perspective` view of themachine, in which a carriage-bow is shown in place with the tenon formedthereon; Fig. 2, a perspective view loolnng at the rear of the machine;Fig. 3, a top plan view; Figs. 4t and 5, detail views of thework-holding heads or disks; and Fig. 6, a perspective view of one ofthe inished bows.

A indicates the frame or bed of the machine, and B B suitable guides orways mounted thereon. The guide B is movable and may be adjusted inrelation to the guide B through the medium of the set screws or bolts aa and securing-bolts b b.

C denotes a carriage or platform -mounted in said ways and designed tobe moved back and forth therein. To provide for its forward movement, orits advance toward the cutter, I employ a heavy spiral spring D,secured, as shown in Fig. 4, by dotted lines, to the under face of thecarriage near its rear end, the other end of the spring being fastenedto the frame at or near the head of the machine. Normally the springtends to hold the carriage in the position shown in Fig. 1, that is, inits advance position, with the work against the cutters.

To provide for the retraction of the carriage, I employ a lever E,pivoted between two uprights c c, secured to the bed. A curved link F,pivotally connected at one end to the lever above its pivotal connectionwith the bed, connects said lever and the carriage, the link beingpivoted at its opposite end to a stud or bolt CZ, formed upon or securedto the carriage. Vhen the lever E is thrown down or in the positionshown in Fig. 2, the pivotal points of v the link will be below that ofthe pivotalpoint of the lever, and hence the lever and its connectionswill act as a lock and prevent the spring from drawing the carriageforward. So soon as the lever is raised and the three pivotal pointscome into alinement the spring is free to act and draw the carriageforward. Of course the operator may control the force. of the spring andthe consequent movement of the carriage by applying more or lesspressure upon the lever.

At the forward end of the carriage I provide a cross-head G, upon theopposite ends of which are secured boxes II and H.

Within the box Il is rotatably secured ahead or disk I, said disk beingshown in detail in Fig. t.l It is provided with two collars,which bearagainst the side faces of the box and prevent the disk from getting outof place and yet permit it to freely turn. Said disk is provided with alongitudinal recess or socket e, made of such shape as to receive theend of a bow J, which, after it is in place, is firmly secured by a turnscrew or bolt f. l K denotes a head or disk designed to be mountedwithin the box I-I. It is provided with atransverse openin g g, one faceof which is curved or slanting to permit the curved portion of the bowto be inserted and iirmly seated therein. The head or disk is alsoprovided with a collar or rim h, the outer edge of said rim being giventhe contour or form to which it is desired to reducethe tenon on 'thebow.

To maintain the disk in the box, a gravitating latchi is secured theretoand bears against the face of thedisk.

A stop or gage L is adjustably securedA to` the frame, and is so placedthatwhen the carriage is drawn back it will be in vertical alinementwith the boxes I-I and II. When the bow is inserted into the disks, thestop comes in contact with the downwardly-projecting part of the bow andprevents its further advance, and when in such position the screwf isturned down and the bow is thus rigidly secured in its properadjustment. Y

M indicates an upright or standard secured to the frame and provided atits upper end with a small wheel N. The collar or rim h of disk K isdesigned to bear against this wheel when the carriage is advanced andtheIOO cutters are working upon the bow. The operator taking hold of thedownwardly-projecting end of the bow turns the same, and consequentlythe disks I and Kwith it. The rim 7L being forced. against the wheel Nby the spring will at all times bear against said wheel, but thecarriage will advance and recede from the cutters according as thecontour or shape of the rim h permits it to advance or forces it back.

Itis to be understood that the shape of the rim maybe varied as desired,and that the work will be inserted in the disks so that its differentfaces will occupy their proper relation to the configuration of the edgeor rim of the disk.

O denotes a shaft or larbor mounted in suitable journals affixed to thehead of the frame or bed. It is provided upon one end with a suitablebelt-pulley P, and upon its opposite end with a cutter or series ofcutters Q. The cutter illustrated in the accompanying drawings comprisesa series of circular saws set staggering, which form of cutter answersthe purpose in a very satisfactory manner.

A hood or cover R is hinged to the end of the frame, and may be closeddown over the cutter and work while the machine is in operation. l

In the manufacture of the metal sockets into which the nished bow endsare inserted there is formed a seam upon the inside. To provide for thisseam, the bow end has to be cut away more on one side than on the other.This is secured by forming the edge or rim of the disk K with a iatportion, as will be clearly seenupon reference to Fig. 5 at j. Theiiattened face upon the bow will be seen at J upon reference to Fig. 6.

The operation of the machine is as follows: The carriage is brought backto the position shown in Figs. 2 and 3 by the depression of the lever E.Vhen in this position, the bow is inserted into the disks the properdistance and secured as before described. The lever is then elevated andthe carriage travels forward toward the rotating cutters, when the rimof disk K comes into contact with wheel N and prevents further forwardmovement. The operator then turns the bow by hand and that portion ofthe bow between the boxes H H is acted upon by the cutter, the carriagereceding and advancing according` to the contour of therim h. Then thetenon has been formed, the lever is again depressed and work withdrawnfrom the cutters. Itis then removed from the machine and the end whichwas in the opening e cut off.

Various forms of cutters may be used, and, if found desirable, thecutter may be made to advance and recede from the work, the work in suchinstance being rotated about a fixed axis. The construction shown anddescribed is, however, the preferred embodiment of my invention.

Having thus described my invention, what I claim isl. In awoodworking-macl1ine, the combination ofthe frame or bed; arotarycutter; a reciprocating carriage; boxes mounted on said carriage; a diskrotatably secured within one of said boxes; and work clamping meanscarried thereby; a second disk rotatably mounted within the other box;said disk being provided with a transverse opening having one faceinclined to the others; and a pattern rim or edge; and a roller securedto the frame.

2. In a woodworking-machine the combination of the frame or bed; acutter; a reciprocating carriage; a spring for. advancing the carriage;alever pivoted to the frame in rear of the carriage; and a linkpivotally connected to the lever and the carriage, the relation of theparts being such that when the carriage is drawn back and the leverdepressed, the parts will be locked, substantially as described.

3. A work-holder disk for woodworkingmachines comprising a solid headorbody having a polygonal opening formed in and extending therethrough,and having one face curved or flared, substantially as described.

4. A work-holder disk for woodworking machines providedl with alongitudinal opening having one face curved or iiared, substantially asdescribed, and a rim or edge having the pattern which lit is desired toirnpart to the work.

In witness whereof I hereunto set my hand in the presence of twowitnesses.

DANIEL BULLOCK.

Witnesses:

L. B. CAswELL, Jr., J. F. SOHREINER.

IOO

